RT Journal Article SR Electronic T1 No Evidence of Gene–Calcium Interactions from Genome-Wide Analysis of Colorectal Cancer Risk JF Cancer Epidemiology Biomarkers & Prevention JO Cancer Epidemiol Biomarkers Prev FD American Association for Cancer Research SP 2971 OP 2976 DO 10.1158/1055-9965.EPI-14-0893 VO 23 IS 12 A1 Du, Mengmeng A1 Zhang, Xuehong A1 Hoffmeister, Michael A1 Schoen, Robert E. A1 Baron, John A. A1 Berndt, Sonja I. A1 Brenner, Hermann A1 Carlson, Christopher S. A1 Casey, Graham A1 Chan, Andrew T. A1 Curtis, Keith R. A1 Duggan, David A1 Gauderman, W. James A1 Giovannucci, Edward L. A1 Gong, Jian A1 Harrison, Tabitha A. A1 Hayes, Richard B. A1 Henderson, Brian E. A1 Hopper, John L. A1 Hsu, Li A1 Hudson, Thomas J. A1 Hutter, Carolyn M. A1 Jenkins, Mark A. A1 Jiao, Shuo A1 Kocarnik, Jonathan M. A1 Kolonel, Laurence N. A1 Le Marchand, Loic A1 Lin, Yi A1 Newcomb, Polly A. A1 Rudolph, Anja A1 Seminara, Daniela A1 Thornquist, Mark D. A1 Ulrich, Cornelia M. A1 White, Emily A1 Wu, Kana A1 Zanke, Brent W. A1 Campbell, Peter T. A1 Slattery, Martha L. A1 Peters, Ulrike A1 Chang-Claude, Jenny A1 Potter, John D. YR 2014 UL http://cebp.aacrjournals.org/content/23/12/2971.abstract AB Background: Calcium intake may reduce risk of colorectal cancer, but the mechanisms remain unclear. Studies of interaction between calcium intake and SNPs in calcium-related pathways have yielded inconsistent results. Methods: To identify gene–calcium interactions, we tested interactions between approximately 2.7 million SNPs across the genome with self-reported calcium intake (from dietary or supplemental sources) in 9,006 colorectal cancer cases and 9,503 controls of European ancestry. To test for multiplicative interactions, we used multivariable logistic regression and defined statistical significance using the conventional genome-wide α = 5E−08. Results: After accounting for multiple comparisons, there were no statistically significant SNP interactions with total, dietary, or supplemental calcium intake. Conclusions: We found no evidence of SNP interactions with calcium intake for colorectal cancer risk in a large population of 18,509 individuals. Impact: These results suggest that in genome-wide analysis common genetic variants do not strongly modify the association between calcium intake and colorectal cancer in European populations. Cancer Epidemiol Biomarkers Prev; 23(12); 2971–6. ©2014 AACR.